Lua, along with his twin sister Luca, aid Yusei Fudo, whom they adore and support in his duels while making fun of fate. Lua is the older twin.

Although they are young, they approach into harsh duels and love to be with Yusei. Lua is a boy who is lively and blundering. He also thinks about protecting his delicate sister.

In the manga, he seems to be influenced by a Card of Darkness and works as a duel assassin under Godwin. He rides a D-Wheel shared with Ruka, who is seated behind him. He holds the manga equivalent of Power Tool Dragon.